1 /* 2 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.nodes; 24 25 import jdk.vm.ci.meta.JavaKind; 26 27 import org.graalvm.compiler.core.common.LocationIdentity; 28 import org.graalvm.compiler.core.common.type.StampFactory; 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 31 import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp; 32 import org.graalvm.compiler.nodeinfo.InputType; 33 import org.graalvm.compiler.nodeinfo.NodeInfo; 34 import org.graalvm.compiler.nodes.FixedWithNextNode; 35 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 36 import org.graalvm.compiler.nodes.spi.LIRLowerable; 37 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 38 39 /** 40 * Saves all allocatable registers. 41 */ 42 @NodeInfo(allowedUsageTypes = {InputType.Memory}) 43 public final class SaveAllRegistersNode extends FixedWithNextNode implements LIRLowerable, MemoryCheckpoint.Single { 44 45 public static final NodeClass<SaveAllRegistersNode> TYPE = NodeClass.create(SaveAllRegistersNode.class); 46 protected SaveRegistersOp saveRegistersOp; 47 48 public SaveAllRegistersNode() { 49 super(TYPE, StampFactory.forKind(JavaKind.Long)); 50 } 51 52 @Override 53 public void generate(NodeLIRBuilderTool gen) { 54 saveRegistersOp = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitSaveAllRegisters(); 55 } 56 57 /** 58 * @return the map from registers to the stack locations in they are saved 59 */ 60 public SaveRegistersOp getSaveRegistersOp() { 61 assert saveRegistersOp != null : "saved registers op has not yet been created"; 62 return saveRegistersOp; 63 } 64 65 /** 66 * @return a token that couples this node to an {@link UncommonTrapCallNode} so that the latter 67 * has access to the {@linkplain SaveRegistersOp#getMap register save map} 68 */ 69 @NodeIntrinsic 70 public static native long saveAllRegisters(); 71 72 @Override 73 public LocationIdentity getLocationIdentity() { 74 return LocationIdentity.any(); 75 } 76 }